Xenon Pharmaceuticals (NASDAQ:XENE) said it has filed its first new drug application for azetukalner as a treatment for focal-onset seizures, while pausing portions of its late-stage psychiatry program to evaluate changes intended to improve tolerability. Speaking at the 2026 TD Cowen Neuropsychiatry Summit, President and CEO Ian Mortimer said the NDA submission for azetukalner in […]